Yes
Stop doing a handstand. If your goldfish is floating, it will float to the top, not the bottom, therefore, you must be upside down!
If the goldfish is swimming in water, it is alive.
Swim bladder disease? http://www.straightdope.com/columns/read/1688/if-a-goldfish-is-swimming-on-its-side-is-this-a-bad-sign
it stops swimming
No!
Gravity
if it is not swimming and it lays on its side then it is dead.
It's not swimming. It's dead. Sorry :(
The fins develop on a goldfish fry after about a couple days after they are hatched. Until then, they are not free swimming and look like a tadpole.
Goldfish are not aggressive fish. They most definitely do not kill people.
Probably because its water is foul and needs changing
They do not stop swimming, if they did they would die.